Originally Posted by
Rickilicious
I had the same problem with freezing UI at the beginning.
However, after trying every combination of patch and quickfix, I noticed that the Freezing portion is because the AI is doing moves/scripts. That's why the loading symbol is your cursor and you can click on your cities and it's laggy. Hitting spacebar worked once for me. Havent tried it with patches or anything yet.
EDIT: Confirmed. Have both patches and both hotfixes installed. Just have to left&right click for 30 or so seconds before the campaign(at least on dwarf. confirmed on tomb kings too)